Physician&#39;s electrical-appliance control.



H. G. FISCHER & P. P. MUSKET.

PHYSICIAN'S ELECTRICAL APPLIANCE CONTROL.

APPLICAT ION FILED JAN. 1!. l9l5- Patented Mar. 26, 1918.

UNITED (STATS i.

HERMAN G. FISCHER AND PETER P. MUSKET, F CHICAGO, ILLINOIS.

lHYSIGIANS ELECTRICAL-APPLIANCE CONTROL.

. Specification of Letters Patent.

Patented Mar. 26, 1918.

Application filed January 11, 1915. Serial No. 1,891.

To all whom it may concern:

Be it known that we, HERMAN C. Frscnrin,

- a citizen of the United States, residing in Chicago, in the county ofCook and State of Illinois, and; Pn'mn P. MUSKET, a citizen of theUnited States, residin at Chicago, in the county of Cook and tate ofIllinois,

7 have invented a new and useful Improvement in PhysiciansElectrical-Appliance Controls, of which the following is aspecification. 1

Our invention relates to physicians electrical appliances and has forits object broadly the provision of an apparatus adapted to supplyproper electric charges to vacuum electrodes, X-ray tubes, sinusoidalapparatus, diagnostic apparatus, cautery apparatus, and other implementsand appliances of like nature- A further object of the invention is theprovision of such an apparatus provided with a Tesla coil receivingcharging current through proper transforming I apparatus, means beingprovided to accurately; positively and directly vary and control thecharge received by the Tesla coil, and to .provide an eflicient andimproved control for the sinusoidal, cautery and diagnostic circuits,such control bein so constructed and arranged that it will possible todeliver improper or dangerous charges to these circuits.

Numerous other objects and advantages wlll be apparent-from thefollowing descript1on when considered in connection with theaccompanying drawing, which illustrates various points in thi'scoil,wires 13, 14 and 15 lead to terminals 16, 17 and 18. The "reactancedevice 12 in the present instance isa soft iron core adapted wheninterrupted current is delivered to the circuit to interpose reactancein amount proportional to the I number of turns in'the coil 11; that isto say,

the number of effective turns in the coil 11 which "depends upon whichterminal 16, 17

e substantially im- 7 nor 18 is connected with the other service wire"to complete what may be termed the primary circuit in the apparatus.Connection is made from any one of the three terminals 16, 17.0r 18 witha terminal 19 of the switch 3 when the switch is in closed position withthe service wire 1 by a wire 21 connected to the terminal l9and to amovable arm 22 adapted to contact in its movement with any one of thethree terminals 16, 17 or 18, suitable stops 23 being provided to limitthe movement of this am. In the transformer 9 two secondary coils orseries of coils generally designated at 24 and 25 are provided, one ofwhich, the coil 25, being adapted to supply energy to the X-ray andvacuum electrodes, and the other, 24, to the cautery, diagnostic, andsinusoidal apparatus, as will be later described. A wire 26 leads fromone end of the coil 25 to one side 27 of an interrupter 28, and a wire29 leads from the other end of the coil 25 to the other side 31 of thisinterrupter. The interrupter 27 may have any preferred constructionadapted to give the charge highand rapidly variable potential. In thepresent instance it is pro from the side 28 of the interrupter to oneside 36 of the condenser. A wire 37 leads from the condenser 34 to one'end of a coil 38 disposed about a reactance imposing device 39. Thecoil 38 is tapped in at a plurality of turns, four in the presentinstance 41, 42, 43 and 44. Wires 45, 46, 47 and 48 connect these setsof turns respectively to buttons or terminals 49, 51, 52 and 53 adaptedto .be engaged by a movable arm 54 which is connected always by a wire55 with one terminal 56 of the primary coil 57 of the Tesla coil 33. Theother terminal 58 of this 'vided with a spark gap 32, which must be Y.coil is connected through the wire 59 and will correspondingly changethe charge from the condenser 34 to the Tesla coil.

The position of the arm shown on the drawing in engagement with thebutton 53 which is connected to the end of the coil 38, remote from theend of the coil connected to the wirei37, interposes the maximum amountof reactance provided'in the present structure, and its movement towardthe right in the figurecuts out a ortion of this reactanoe until itreaches the utton 49 interposing the least reactance. A further controlof this charge is ef- 4 fected through the condenser itself, thisconnected. The portion of the condenser condenser being of the multipleorder, having three outlet terminals 61, 62 and 63,

the terminal 62 being connected to two terminals 64 and 65 by a wire 66,and the terminal 63 being connected to a terminal 67 by a wire 68. Amovable arm 69 is connected by a wire 71 with the terminal 61' and it isto this wire that the wire 37 is controlled by the terminal'6l istherefore always in the-Tesla coil charging circuit. The portionconnected by the wire 62 may be added by moving the arm 69 onto thecontact 64 and the portion controlled by the terminal 63 may then beadded by moving the arm on to the contact 65,- which movement, by reasonof the arrangement of the contacts 65 and 67, causes the arm ,69 toengage the contact 67 also. The contacts 65 and 67 arearranged in linewith the pivotal axis of the arm 69'and the contact 64 is off thisalinement. Three separate devices are therefore provided for connot beenall that could be desired, for the condenser being located between-thereactance device and the Tesla coil and connected to the Tesla coil by acircuit over which there was no direct control, has prevented in largepart the desired delicate control of the charge which 111$ presentarrangement provides.

The X-ray apparatus generally designated at 72, by dotted lines, isadapted to have one end connected to the center 73 of the Tesla coilwhich is connected by a wire 74 with the terminal 56 and whichconstitutes the active pole in the X-ray circuit.

The other end of the X-ray device is con nected with an inactive pole75, in turn connected by a wire 76 with the terminal 56 of the Teslacoil 33. A vacuum electrode indicated in dotted lines at 77 ,on thedrawing, may be connected by a wire 78 with the center 73 of the Teslacoil in accordance with the usual custom.

Further description of the means of connecting the X-ray apparatus andthe vacuum electrodes is not thought to be necessary, as these devicesthemselves form no part of our present invention. They are, however,indicated on the drawing to show how the circuits supplying propercharges to them are arranged in the present embodiment of our invention.

The other secondary coil 24:- is preferably constructed of a series ofcoils as follows: At the forward end a large number of turns form'a coil79. The coil 79' may be of wire of any desired resistance. Followingthese coils are a series of coils (eleven) in the present instanceindicated bylight lines 82 of low resistance, the lowest possibleresistance being desirable. Following this in series and in series withthe coils 82 is a seres of eight coils 83 which may have any desired,resistance. These coils are all connected in series with each other andeach have an end connected with a series of twenty terminals arranged onthe circumference of a circle and numbered consecutively 1 to 20 inactual practice these terminals being numbered 1 to 20 for convenience.The connectioh between the coils and these terminals is made by wires 84and 85, the wires 84 (those indicated by heavy lines) having any desiredresistance, and the wires 85 (those indicated by light lines) havinglittle'or no resistance. It is from these terminals .that the charge istaken forthe cautery, diagnostic and sinusoidal apparatus and this isaccomplished as will now be described. Two arms 86 and 87 in electricalcontact with each other, are ivoted at the center of the circle about w'ch the terminals 1 to 2O -are arran ed. The arms 86 and 87 are freelmova 1e about their pivot 88, the arm 86, ing of a proper length toengage any one of the terminals 1 to 20 said terminals bein spaced aparta proper distance to permit t e arm to contact with one only at onetime. The other arm 87 is shorter than the arm 86 and is adapted tocontact with three terminals, numbered respectively 89, 91 and 92,arranged within the"circle of contacts 1 to 20 as Wlll be laterdescribed. The terminal,

89 is connected with'one of a pair of posts 93 to which it is intendedtheleads to the cautery apparatus may be fastened. The

other terminal of this pairtis connected by a wire 94 with the firstcoil of the series 82.

It is intended that charge shall be supplied no to the cautery apparatusfrom any one of .the terminals 2 to 12 both inclusive, to

into this circuit, as it is cut out by connect ing the wire 94 with thewire to the terminal 2 Connection between any of the coils of the series83 in this cautery circuit is prevented by an operating or manipulatinghandle 95 upon the arm 87 which prevents passage of the arm 86, the arm86 being mounted on the pivot 88 above the arm 87.

The diagnostic apparatus is adapted to be connected to a pair of bindingposts or their equivalent 96, one of which posts is connected to thewire 94 and the other by a Wire 97 with the terminal 91. This terminalis positioned to permit the arm 86 to contact with any of the terminals2 to 16 both inclusive, the manipulating handle 95 of the arm 87preventing introduction of the coils with the terminals 17 18 19 and 20The sinusoidal apparatus .is adapted to be connected to apair of bindingposts 98, one of which is connected by a w1re 99 with the front end ofthe coil 79 and the other by a wire 101 with the terminal 92, thisterminal being so arranged that the arm 86 may contact with any one ofthe terminals 1 to 20 It will be noted that the arrangement of bindingposts and their connections bring the coil 19 into operation only whenthe sinusoidal circuit is used, giving the sinusoidal circuit avariation in control of twenty steps, the least charge from which, thatprovided when the arm 86 engages the terminal 1 being supplied wholly bythe coil 79. As the arm is moved successively from one terminal to theother-until it reaches the ter- -minal 20 the individual coils of theseries 82 first come successively into operation until the termina l 12is reached, after which the individual 00118 of the series 83 comesuccessively into play until the terminal 20 is reached, the movement ofthe arm from each terminal to the next succeeding bringing one more coilinto operation and thereby increasing the charge proportionately.

The connections in the cautery and diagnostic circuits, when the arm 86is in contact with the terminal 1 deliver no charge as the cautery anddiagnostic circuits do not require the services of the coil 79 andconsequently these circuits start with the terminal 2 the cauterycircuit going only through the terminal 12 and bringing suc-.

cessively the coils of the 'fective operation.

The diagnostic circuit starts with the terminal 2 and ends with theterminal 16 bringing successively into operation all of the coils ofseries 82 and the first four coils series 82 into efof series 83, Twostops 102 are provided to prevent disarrangement of the arms andmalformation of the circuits. I The circuits provided for the variousapparatus comprise the principal ones desired by medical practitionersat the present time, and it will be manifest that each of these circuitsis subject to a fine and accurate control of the charges for the variousforms of apparatus desired.

It is thought that the invention and many of its attendant advantageswill be understood from the foregoing description, and it Will beapparent that various changes may be made in the form, construction andarrangement of the parts without departing from the spirit and scope ofthe invention or sacrificing any of its material advantages, the formhereinbefore described being merely a preferred embodiment thereof.

We claim:

1. In an apparatus of the character described the combination of atransformer having a plurality of secondary coils connected to eachother and to terminals arranged for engagement by a moving arm, a movingarm for engaging said terminals, sinusoidal, diagnostic and cauterycircuits receiving current from said coils, said cir-,

a time, said last mentioned arm determining the circuit closed and thefirst mentioned arm the number of coils efi'ective on the circuit,

2. In an apparatus of the character described the combination of atransformer having a plurality of secondary coils connected to eachother and to terminals arranged for engagement by a moving arm, a movingarm for engaging said terminals, sinusoidal, diagnostic and cauterycircuits receiving current from said coils, said circuits being closedthrough a second moving arm adapted to close only a single circuit at atime, said last mentioned arm determinin the circuit closed and thefirst mentioned arm the number of coilsefiective on the circult, andmeans for restrainlng the number of coils in said circuits to apredetermined number in certain of said circuitsless than the number ofcoils in the secondary winding of said transformers.

3. In an apparatus of the character described the combination of atransformer having a plurality of secondary coils connected to eachother and to terminals arranged for engagement by a moving arm, a movingarm for engaging said terminals, sinusoidal, diagnostic and cauterycircuits receiving current from said coils, said circuits being closedthrough a second moving arm adapted to close only a single circuit at atime, said last mentioned arm determining the circuit closed and thefirst mentioned i arm the number of coils efi'ective on the circuit,said arms being arranged to prevent inclusion of too great a number ofcoils in said circuit.

4. In an apparatus of the character de-' arm adapted to close only asingle circuit at Y a time, said last mentioned arm determining thecircuit closed and the first mentioned arm the number of coils eflectiveon the circuit, said arms having a common pivotal axis and being formedto prevent relative passing to retain the arm engaging the terminalsconnected with the coi s ona predetermined side of thecircuit-determining arm to thereby revent inclusion of too great anumber of 0011s in certain circuits.

5. In an apparatus of the character described the combination of atransformer having a plurality/of coils of different electricalcapacity, sinusoidal, diagnostic and cautery circuits including variablenumbers of said coils, and each circuit also including a pair of arms,one for determining the circuit operative and the other for determiningthe number of coils in said circuit, certain of suits. v

6. In an apparatus of the character described the combination of atransformer having a plurality of secondary coils, separately operablesinusoidal, diagnostic and cautery circuits including said coils andincluding also a pair of moving arms, one for determining the circuit tobe operated and the other to determine the number of coils in saidcircuit, and one of said circuits having supplemental secondary windingson said transformer.

7. In 'an apparatus of the character described the combination of atransformer having a plurality of secondary coils, separately operablesinusoidal, diagnostic and cautery circuits including said coils andincluding also a pair of moving arms, one for determining the circuit tobe operated and the other to determine the number of coils in saidcircuit, and one of said circuits having supplemental secondary windingson said coils being common to all of saidcirsaid transformer included inseries with said H. G. FISCHER.

PETER P. MUSKET.

Witnesses:

O. V. OSBORN, A. Nourcm.

